var xmlHttp

function showPL(dtype,ztabbr,PlanID,CurPage)
{ 
if (PlanID.length > 0)
{ 
var url="/discuss/discuss.html?sid=" + Math.random() + "&id=" + PlanID + "&CurPage=" + CurPage + "&abbr=" +ztabbr + "&d=" + dtype

xmlHttp=GetXmlHttpObject(stateChanged)
xmlHttp.open("GET", url , true)
xmlHttp.send(null)
} 
else
{ 
document.getElementById("comment").innerHTML=""

} 
} 

function PostPL(dtype,ztabbr,PlanID)
{ 
	var username = document.getElementById("username").value;
	var psw = document.getElementById("password").value;
	var maintxt = document.getElementById("main").value;
	var checknumber = document.getElementById("checknumber").value;
	if (PlanID.length > 0)
	{
		var postdata = "name=" + username+ "&psw=" + psw + "&main=" + maintxt + "&checknumber=" + checknumber
		var url="/discuss/discuss.html?sid=" + Math.random() + "&id=" + PlanID + "&CurPage=1&abbr=" +ztabbr + "&d=" + dtype
		xmlHttp=GetXmlHttpObject(stateChanged)
		xmlHttp.open("POST", url , true)
		xmlHttp.setRequestHeader("Content-Length",postdata.length);    
	  xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
		xmlHttp.send(postdata)
	}else{ 
		document.getElementById("comment").innerHTML=""
	} 
} 



function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{
document.getElementById("comment").innerHTML=xmlHttp.responseText 
} 
} 
function GetXmlHttpObject(handler)
{ 
var objXmlHttp=null; 
if (navigator.userAgent.indexOf("MSIE")>=0)
{ 
var strName="Msxml2.XMLHTTP";
if (navigator.appVersion.indexOf("MSIE 5.5")>=0) //既使是IE都有两种申明方式
{
strName="Microsoft.XMLHTTP";
} 
try
{ 
objXmlHttp=new ActiveXObject(strName);
objXmlHttp.onreadystatechange=handler; 
return objXmlHttp;
} 
catch(e)
{  
return;
} 
}
else
{
objXmlHttp=new XMLHttpRequest(); //Firefox、Opera等都是用这种
objXmlHttp.onload=handler;
objXmlHttp.onerror=handler;
return objXmlHttp;
}
}